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function createXHR(){
var x=[function(){return new ActiveXObject("Msxm12.XMLHTTP");},function(){return xmhttp=new ActiveXObject("Microsoft.XMLHTTP");},
function(){return new XMLHttpRequest();}];
for (var i=0; i<x.length; i++) {
try {
return (x[i])();
} catch (e) {
}
};
}
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var xmlreq = false;
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xmlreq = new ActiveXObject("Msxml2.XMLHTTP");
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xmlreq=new XMLHttpRequest();
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xmlreq=new XMLHttpRequest();
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var xmlreq = false;
//
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xmlreq = new XMLHttpRequest();
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// Create XMLHttpRequest via MS ActiveX
try {
// Èç¹ûJavaScriptµÄ°æ±¾´óÓÚ5
xmlreq = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e1) {
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